# 共用的自定义工具类
import functools
from flask import current_app
from flask import g

from info.models import User

from flask import session


def do_index_class(index):
    """
    自定义过滤器，过滤点击排序html的class

    """
    if index == 0:
        return "first"
    elif index == 1:
        return "second"
    elif index == 2:
        return "third"

        return ""

def user_login_data(f):
    @functools.wraps(f)
    def wrapper(*args, **kwargs):
        # 获取到当前登录用户的id
        user_id = session.get("user_id",None)
        # 通过id获取用户信息
        user = None
        try:
            user = User.query.get(user_id)
        except Exception as e :
            current_app.logger.error(e)


        g.user = user
        return f(*args, **kwargs)

    return wrapper


def query_user_data():
    # 获取到当前登录用户的id
    user_id = session.get("user_id", None)
    # 通过id获取用户信息
    user = None
    if user_id:
        try:
            user = User.query.get(user_id)
        except Exception as e:
            current_app.logger.error(e)
        return user
    return None







